Apparatus for measuring the rate of flow of fluids



Nov. 6, 1923;

, 1,690,949 a. s gco ALBANESE APPARATUS FOR MEASURING THE RATE OF FLOWOF FLUIDS EFiled Jun 7, 19

* frwenl'or /l 1'29: 3. Magma; I

Patented Nov. 6, 1928.-

UNITED STATES PATENT OFFICE.

erosarrn SACCO Amman, or mars, men.

APPARATUS FOR MEABURIN G THE RATE OF FLOW F FLUIDS Application filedJune 7, 1924, Serial No. 718,580, and in France June 9, 1923.

The present invention relates to a liquid measuring device, and has foran ob ect to indicate at a distance from the liquid vanations in thesurface level ofthe same '6 Another object of the invention is to sodispose resistances at successive points relative to a column of liquidas to bring into and remove the resistances from an electric circuit asthe surface level of the column of liquid fluctuates so that there is acorresponding fluctuation in the circuit.

The invention also embodiesa novel and simple construction of device forsupporting a column of mercury or other suitable liquid which may varyin height, and for supporting in a novel and simple manner a number ofresistances at spaced heights relatlve to the column.

With the foregoing and other objects in View, the invention will be morefully described hereinafter, and Will be more particularly pointed outin the claims appended hereto.

In the drawings, wherein like symbols refer to like or correspondingparts throughout the several views,

Figure 1 is a fragmentary vertical SQCtIOII taken through a portion of ameasuring device constructed according to the present 1n- 80 vention,

Figure 2 is a transverse section through the same taken substantially onthe line XY of Figure 1, and

"Figure 3 is a diagrammatic vlew of the 85 device showing the relationof the parts and the liquid supporting means.

Referring to the drawing, and first to F1gure 3, A designates one branchof relatlvely large diameter of a tube for mercury or other 40 suitableliquid, and B designates a relatively small diameter branch of the tubewherein the fluctuations in the liquid level may be more readilymeasured. The distance k may indicate by difference in surface levels inthe bunches A and B of the tube differences in pressures on the surfacesof the liquid columns in the two branches. R is aresistance in anelectric circuit which is divided'into sections by contact pointsentering at different heights into the branch B for contact with theliquid to close the circuit variably through the resistances.

Referring now to Figures 1 and 2, a designates a block of metal or thelike having a longitudinal grooveb in one side providing 58 the smalldiameter branch of the tube and in which the liquid is adapted to riseand fall. The open side of the groove 1) is closed by a thick panel 0 ofglass sealed against the block a by packing strips 03. A lid or frame eis 00 secured to the block a around the panel a by screws f, andoverlies the marginal edge portion of the panel 0 to hold it in place.

The block a is provided with a series of holes or openings 2' of conicalform which ll open at their larger ends into the groove 6 and at theirsmaller ends through the op-. posite side of the block a. Studs g arecentered and sealed in these openings i by plugs I of insulating'material which is placed in 7 the openings in any suitable manner. Thestuds 9 provide contact points extending from resistance. coils isarranged along the side of the block a and protected by a cover Z whichmay be supported on the block a. 76

In operation, as the liquid rises in the groove 6 it comes into contactwith the studs 9 and changes the resistance in the circuit to which thecoils in are connected as shown in Figure 3. Thus fluctuations in thecolumn of 80 liquid cause corresponding changes or fluctuations in thecircuit, and the latter may include any suitable registering orindicating device desired and which may be located adjaeent to or at adistance from the coils I1.

I claim:

1. A tubular rheostat comprising a block having a groove therein adaptedto receive a body of mercury and provided with holes leading through theblock at spaced points along the inner wall of the groove, a platesecured against the block for closing said groove, contact studs carriedby the block in said holes and projecting at one end into the groove forcontact with the mercury, packings carried by the block in said holesabout said studs for sealing the same in the block, and resistance coilsconnected tosaid contact studs.

- 2. A tubular rheostat comprising a block groove, said holes in theblock tapering outwardly from the groove, contact studs carried by theblock in said holes and exposed at one end to the mercury in the groove,conical packin s carried b the block in said holes 10 for sea ing thestu s in the block, and resistanoe coils connected to said contactstuds.

GIUSEPPE SACCO ALBANESE.

